I haven't noticed the non-descriptive descriptions on Worth strings; be that as it may, they are more than long enough to use on any sized ukulele. For example, I use concert strings on my Kamaka HF3L. However you have to realize that there are repercussions to using the string set you choose. Strings designed for smaller ukuleles have less tension. Less tension makes it easier on the fingers and makes it easier to festoon your playing with string bending and glissandi. On the other hand, less tension makes the strings less resonant. So, you can do whatever you want, but you do need to take responsibility for your choice. I personally hate the traditional tinny, chirpy ukulele sound. So I always get looser strings to affect a murkier, more sombre tone.